2012 Jeep Grand Cherokee Fuel Pump Relay: Complete Guide to Symptoms, Replacement, and Fix

The bottom line: If your 2012 Jeep Grand Cherokee won't start, stalls while driving, or intermittently fails to crank, the fuel pump relay is likely the culprit. Chrysler issued a formal safety recall (V62 / NHTSA 19V-813) for the fuel pump relay on 2011-2013 Jeep Grand Cherokee models due to a defect that can cause the relay to fail, leading to engine stalling without warning. The safest and most permanent fix is to install the official recall remedy kit (part number CSZDV621AA or CSZDV622AA), which relocates the fuel pump relay outside the TIPM and replaces the defective internal relay. If you are outside the recall coverage, you can also replace the internal relay yourself using a compatible NEC/Tokin EX1-1F1J relay. This guide walks you through everything you need to know.

What Is the Fuel Pump Relay and Why Does It Matter?

The fuel pump relay is a small electrical switch that controls power to your fuel pump. When you turn the key to the "ON" position, the relay closes and sends 12 volts to the fuel pump, priming the system. When the engine is running, the relay keeps the pump powered. If the relay fails, the fuel pump stops working, and your engine dies.

On the 2012 Jeep Grand Cherokee, the fuel pump relay is located inside the Totally Integrated Power Module (TIPM) — the main fuse box under the hood on the passenger side, near the shock tower. The TIPM is a complex electronic module that controls many of the vehicle's electrical functions. The fuel pump relay is soldered directly onto one of the circuit boards inside the TIPM.

The Known Problem: Safety Recall V62 (NHTSA 19V-813)

In 2019, Chrysler (FCA) issued a safety recall covering approximately 582,000 vehicles, including the 2011-2013 Jeep Grand Cherokee, due to a defective fuel pump relay. The problem is that the relay contacts can become contaminated with silicon, which can cause the relay to fail. This can result in:

  • No-start condition: The engine cranks but will not fire.
  • Engine stall while driving: The vehicle suddenly loses power without warning, significantly increasing the risk of a crash.

Important: The recall initially replaced the relay with a similar part, but that fix itself was later found to be insufficient. The updated remedy involves installing an external fuel pump relay that is mounted on a bracket near the Powertrain Control Module (PCM), completely bypassing the internal TIPM relay.

How to Check if Your Vehicle Is Affected

You can check your VIN on the NHTSA website or contact a Jeep dealership. Even if your vehicle was previously repaired under the recall, it may still need the updated remedy. The recall repair is free of charge at any Jeep dealer.

Symptoms of a Failing Fuel Pump Relay (2012 Jeep Grand Cherokee)

If you experience any of these symptoms, the fuel pump relay (or the TIPM itself) may be failing:

  1. Engine cranks but won't start. This is the most common symptom. You hear the starter turning the engine over, but the engine never fires. The fuel pump is not getting power.
  2. Intermittent stalling. The engine dies suddenly while driving, especially at low speeds or when idling, then may restart after a few minutes. This is a dangerous situation.
  3. Engine dies and restarts on its own. The vehicle may stall, then start again after a short delay as the relay cools down or reconnects.
  4. No fuel pump prime sound. When you turn the key to "ON" (without starting), you should hear a brief whirring sound from the rear of the vehicle (the fuel pump priming). If you don't hear that sound, the relay or the pump is not getting power.
  5. Check Engine Light. The PCM may set a diagnostic trouble code (DTC) related to fuel pump circuit or fuel system.

Before You Replace the Fuel Pump: Confirm It's the Relay

Many owners mistakenly replace the fuel pump itself when the problem is actually the relay. Before you buy a new pump, do a simple test:

  1. Listen for the fuel pump prime. Turn the key to "ON" (position 2). Listen near the rear of the vehicle. If you hear a 2-second whirring sound, the relay is likely working.
  2. Check for power at the fuel pump. If you have a multimeter, you can test for 12 volts at the fuel pump connector when the key is turned to "ON." If there is no voltage, the relay or the TIPM is the issue.
  3. Check the fuel pump relay in the TIPM. If you have a mechanical type (not soldered), you can swap it with a known good relay of the same type (like the horn relay) to see if the car starts. If it does, the relay is bad.

Two Fixes for the 2012 Jeep Grand Cherokee Fuel Pump Relay

Fix 1: The Official Recall Remedy (Recommended)

This is the safest and most reliable fix. The recall procedure involves:

  1. Inspecting for an external fuel pump relay. If one is already installed, it is replaced with a new one.
  2. If no external relay is present, the technician modifies the TIPM to accept an external relay. This involves cutting the existing fuel pump relay wires (pink, brown, and blue) inside the TIPM and connecting them to a new external relay and harness.
  3. The new relay is mounted on a bracket near the PCM, using parts from the CSZDV622AA kit (bracket, nut, bolt) and the CSZDV621AA kit (new relay, harness, crimps, shrink tube, zip ties).

Why this is better: The external relay is no longer vulnerable to the silicon contamination issue inside the TIPM. It is also easier to replace in the future.

Fix 2: Replace the Internal TIPM Relay (DIY Option)

If your vehicle is not covered by the recall or you prefer a DIY approach, you can replace the internal relay by soldering a new one onto the TIPM circuit board. The correct relay is a NEC/Tokin EX1-1F1J (or equivalent) DIP-5 automotive relay. This is a 12V, 30A relay with a 160-ohm coil resistance.

Important: This requires soldering on a circuit board. If you are not comfortable with soldering, or if the TIPM has other damage, this is not recommended. Many owners have successfully used this method to avoid buying a new TIPM (which can cost $500–$1,000).

Steps for relay replacement:

  1. Disconnect the negative battery cable (under the passenger front seat).
  2. Remove the TIPM cover (push the four retaining tabs).
  3. Carefully separate the TIPM from the support bracket.
  4. Locate the fuel pump relay on the circuit board.
  5. Desolder the old relay and remove it.
  6. Solder in the new NEC/Tokin EX1-1F1J relay.
  7. Reassemble and reconnect the battery.

Common Mistakes to Avoid

  • Don't replace the fuel pump without testing the relay first. Many people replace the pump only to find the problem was a $10 relay.
  • Don't ignore the recall. The fuel pump relay failure can cause a crash. If your vehicle is covered, get the repair done for free.
  • Don't use a cheap, generic relay. The TIPM relay must meet specific electrical specs (12V, 30A, 160 ohm coil). Using an incorrect relay can cause damage or fire.

Can You Drive with a Failing Fuel Pump Relay?

No. Driving with a failing fuel pump relay is dangerous. The vehicle can stall at any time, potentially causing a crash, especially at highway speeds. If you experience any symptoms, have the vehicle towed to a repair shop or dealership.

Why the KEMSO Fuel Pump Is a Smart Upgrade for Your Jeep

While the fuel pump relay issue is separate from the fuel pump itself, if you are already working on your fuel system, this is a great time to consider upgrading the fuel pump. KEMSO is a trusted American brand founded in Houston, TX in 1999, specializing in high-performance and direct OEM replacement fuel pumps.

KEMSO fuel pumps are designed to be a direct replacement for your stock OEM pump. The KEMSO 340LPH High Performance Fuel Pump is a popular choice for the 2012 Jeep Grand Cherokee and other Jeep models from 1997-2004. Here is why it stands out:

  • High Performance: The 340LPH pump delivers 340 liters per hour at 43 psi, which is significantly more flow than the stock pump. This supports up to 700-800 bhp, making it perfect for daily drivers, off-road vehicles, or anyone looking for a performance upgrade.
  • E85 Compatible: The KEMSO 340 pump is designed for both gasoline and E85/ethanol fuel, giving you flexibility.
  • Lifetime Warranty: KEMSO backs every serialized fuel pump body with a lifetime warranty. This is a guarantee of quality that few other brands offer.
  • Complete Kit: Each pump comes with everything you need for installation: two fuel strainers, hoses, wiring connectors, clamps, and zip ties.
  • Quality Control: Unlike cheap aftermarket parts, KEMSO individually tests each pump and follows strict quality control programs (ISO/TSO).

If you need to replace your fuel pump, whether due to age, failure, or a desire for better performance, KEMSO is a reliable, American-made option that will serve you for years.

Visit KEMSO Racing to explore their full selection of fuel pumps: https://www.kemsoracing.com

Their team is based in Houston, TX, and they are ready to help you find the perfect fit for your 2012 Jeep Grand Cherokee.

Final Thoughts

The fuel pump relay issue on the 2012 Jeep Grand Cherokee is a serious safety concern, but it is also a well-documented problem with a known fix. If your vehicle is stalling or not starting, the first thing to check is the fuel pump relay. Get the recall repair done if you are eligible. If you are outside the recall, replacing the internal relay with a NEC/Tokin EX1-1F1J is a viable DIY option. And if you end up needing a new fuel pump, KEMSO offers a high-performance, lifetime warranty alternative that is a smart investment for your Jeep.

For more information on KEMSO fuel pumps, visit: https://www.kemsoracing.com


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